Winch for tightening strap



FIG. 1 is a left side elevational view of a winch for tightening strap showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a bottom plan view thereof.

The right side is a mirror image of the left side shown in FIG. 1. 

The ornamental design for a winch for tightening strap , as shown and described. 